Urgent : About Raid

I Urgently need your help=2E
I have a linux machine (2=2E4=2E18-24=2E7=2Ex)=2E My infrastructure person (who has been here much before me) claims that this machine is using raid=2E

No we were running out of disk space so added a 34 gb disk to the container and ran the ibm's serveraid tool and synchronised the disks etc=2E On reeboting i see that /dev/sdb has indeed increased from some 70+GB to 106GB=2E But when i try to create new partitions on this devise it gives me the same error it used to give beofore adding the disk "no free sectors available"=2E

Now my questions are :
1) How do i find out if this machine is using software raid or a hardware raid
2) what level of raid am i using
3) now that i see that the capacity of sdb has increased, how do i make it available for use=2E Is there something i need to do on the linux side?

please see below for some outputs:(this is after adding the disk)
cat /proc/mdstat
Personalities :
read_ahead not set
unused devices: <none>

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Have you looked at using parted? Linux filesystems don't automatically grow
as you add disk space, not even when if you used LVM. You might need to
unmount the filesystems, go into runlevel one and use parted to grow your
partitions.

Before i added this additional disk fdisk -s /dev/sdb would show only 77 gb of space, after adding the disk it shows 104GB of space. I tried going in through parted with the results below, it some how does not recognise this extra space...

1. Normally, the RAID device is md(*). From the output of fdisk it looks
like those partition are defined with a linux filesystem id. It has been a
long time, but I think the system id would be a raid system id at the
partition level. I don't think you are using software RAID. What does
/etc/fstab look like?

Can you show me the output of your attempt to create a partition using
fdisk? You can also use parted if you want.

Use parted to grow the extend volume. The parted menu is easy to figure
out. Let me know if you have any problems. By the way, a disk can have 4
primary partitions or 3 primary and 1 extended partitions with logical
partitions inside. I don't think you can have two extended partitions.

I have never used parted before, and just out of desperation i tried it this time. I am a little worried when it comes to extending existing partitions. Will i loose any data when i do this? will i have to reboot my machine?

I believe this is the solution to my problem but would like some assurance before plunging ahead.

in my case i will have to extend MINOR 4
say i try to resize it to take the rest of the disk space (start=51217.339 and end=104145.000) will the partitions after 4 that is 5 and 6 remain safe? coz these partitions come within the space range i will use while resizing.

That is my only concern. I just want to be prepared as far as possible.

Hi Dan. Thanks for responding. I can't get to the white paper:
Organizational policies prohibit access to this
I have LINUX V9.0 on the PC and am a real newbie so no idea what Windows Services is or where. Thanks again.
Bob

To be honest, it has been over a year since I had to do that. I don't
think you will lose your data, but you might have to umount those
filesystems first. Can you backup those partitions before attempting to
increase the extended partition? I have had to grow and shrink partitions
many times before using parted and have never lost any data. Do you have a
pc running linux? Throw on a copy of redhat but don't use all of the disk
space. Create the same partition structure and then attempt to grow the
extended partition.

Can anyone else backup what I said??? I have been stuck in the AIX world
lately. Have had to make some room in the brain...

Yes, It has been a while and I don't have a Linux box with a XServer in
front of me, but you might be able to right click on the icon, and then see
what script it is kicking off. Also, you can did through you home directory
to find information about the icons on the desktop.

You might start off by doing a find on the user's home directory and then
looking for the icon name.

I use a program called Partition Commander because, from everything I
have learnt you cannot resize a Regular partition using any of the
included tools. either you need to have a pre existing LVM and use the
"lv" set of commands (that is why LVM exists) or use a program like
Partition comander as I do. The only way otherwise is to backup and
reset the partition. then restore the data from backup.

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